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travis-ci: retry if Git for Windows CI returns HTTP error 502 or 503

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The Git for Windows CI web app sometimes returns HTTP errors of
"502 bad gateway" or "503 service unavailable" [1]. We also need to
check the HTTP content because the GfW web app seems to pass through
(error) results from other Azure calls with HTTP code 200.
Wait a little and retry the request if this happens.

[1] https://docs.microsoft.com/en-in/azure/app-service-web/app-service-web-troubleshoot-http-502-http-503

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Lars Schneider 2017-05-03 23:50:15 +02:00 committed by Junio C Hamano
parent 6fa68ff288
commit 016d66f512
1 changed files with 21 additions and 2 deletions
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23
ci/run-windows-build.sh
View file

@ -14,14 +14,33 @@ COMMIT=$2
gfwci () {
local CURL_ERROR_CODE HTTP_CODE
exec 3>&1
CONTENT_FILE=$(mktemp -t "git-windows-ci-XXXXXX")
while test -z $HTTP_CODE
do
HTTP_CODE=$(curl \
-H "Authentication: Bearer $GFW_CI_TOKEN" \
--silent --retry 5 --write-out '%{HTTP_CODE}' \
--output >(sed "$(printf '1s/^\xef\xbb\xbf//')" >cat >&3) \
--output >(sed "$(printf '1s/^\xef\xbb\xbf//')" >$CONTENT_FILE) \
"https://git-for-windows-ci.azurewebsites.net/api/TestNow?$1" \
)
CURL_ERROR_CODE=$?
# The GfW CI web app sometimes returns HTTP errors of
# "502 bad gateway" or "503 service unavailable".
# We also need to check the HTTP content because the GfW web
# app seems to pass through (error) results from other Azure
# calls with HTTP code 200.
# Wait a little and retry if we detect this error. More info:
# https://docs.microsoft.com/en-in/azure/app-service-web/app-service-web-troubleshoot-http-502-http-503
if test $HTTP_CODE -eq 502 ||
test $HTTP_CODE -eq 503 ||
grep "502 - Web server received an invalid response" $CONTENT_FILE >/dev/null
then
sleep 10
HTTP_CODE=
fi
done
cat $CONTENT_FILE
rm $CONTENT_FILE
if test $CURL_ERROR_CODE -ne 0
then
return $CURL_ERROR_CODE